Plate-holder.



H; B. ROUSR,

PLATE HOLDER. APPLICATION 'I'ILBD JULY 10, 1907.

Patented ay 11,-1909.

MIKE

IS Psi-Ens co wAsmua-ros-r, n c.

HARRY B. ROUSE, OF CHICAGO, ILLINOIS.

PLATE-HOLDER.

Specification of Letters Patent. Application filed July 10, 1907.

Patented May 11, 1909. Serial No. 383,009.

To all whom it may concern:

Be it known that I, HARRY B. RoUsE, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Plate-Holders, of which the following is a full, clear, concise, and exact description, reference being had to the ac companying drawings, forming a part of this specification.

My invention relates to printing plate holders, and has for its object th improved structural characteristics of such holders which will stood by reference to the accompanyin drawing and which will be pointed out in the appended claim. i

In the drawing-Figure 1 is a plan view accordance with the bled in one way. Fig. 2 shows another re arrangement of the blocks illustrated in Fig. 1. of Fig. 1, showing but one block, however.

arrow 4 of Fig. 3. Fig. 5 is a sectional view on line 5 5 of Fig. 3. Fig. 6 is an end view of a printers block in the direction of arrow 6 of Fig. 8. Y

Like arts are indicated by similar characters of reference throughout the different figures.

In practicing certain characteristics of my invention, I employ a solid one-piece block a that has a recess led into the same, in which recess a key of suitable shape, such as the plate I), is inserted, the recess being desirably in the form of a slot extending from side to side of the block for cheapness of manufac ture and effectiveness in construction. Where the slot is employed, the plate I) may be very tightly driven into position. The blocka is provided with a bore that is open at its to portion, and in which is disposed a threaded shaft 0, which threaded shaft is desirably of a diameter that will permit contact of the bore surface with the threads thereof, whereby the bore may in itself act as a bearing for the shaft, by reason of such engagement of the threads of the shaft. It may be desired also to provide additional bearing support for the shaft, in which event the shaft may be reduced at d, there engaging a corresponding opening in an end wall 6 of the block which is formed when the shaft is to have I further bearing than is afforded by the dii rect engagement of its threads with the bore e prov1sion of g g ing' the function of as in said hook is prevented from being moved Fig. 3 is a secfiiOIlal v ew 011 l ne 3 3 vertically with respect to the block, the base portion of the hook being threaded to en- Fig. 4 is a view of a block in the direction of gag th thread upon the shaft.

perpendicular to the axis of the shaft. be more readlly under- 5 of the block. While .the shaft is provided with a supplemental bearing at one end, at 6, it may also have a supplemental hearing at the other end by having the head f of the shaft bear upon the surface formed in the enlargement g of the lock bore.

The shaft is 0{provided with an annular groove h locate between its ends, circumscribing the same and being endless, the groove thus being located in a single plane This groove receives the key 6, said key performpreventing longitudinal movement of the shaft with respect to the block, as said shaft is turned by means of a i suitable tool applied to the head f. showing two printers blocks constructed in invention and assem- The traveling jaw i of the block has its base (portion in dove-tail fit with the block, icated clearly in Figs. 4 and 5, whereby It will be seen that when thehead is turned in one direction, the hook will-be moved outwardly, and when turned in the other direction, will be moved inwardly, unclamping and clamping the plate that may be immediately in front of the jaw of the hook.

The key I), as stated, reserves the longitudinal relation of the slihft with respect to the block, this being accomplished irrespective of the load that may be imposed upon the hook.

I believe it to be novel with me to thus construct a printing plate holder with a block made in one piece having a recess therein through which a key is passed into engagement with an annular groove in an operating shaft. The advantages of this construction must be very apparent. The construction is structurally simple, very strong, and will not become impaired becaus .there are no parts of the block to become separated. These advantages are very important. Particularly do I believe it to be new with me to provide the key in engagement with the shaft in a construction wherein the base of the hook extends only partially about the shaft, about the u per portion thereof, so as to permit the hoo to travel bodily the length of the shaft without beingfobstructedfbyithefkeyfandilidesire:to

riplieral portion of the shaft so as to permit t claim this construction broadly whether the j 1 he jaw to travel over t 1e key.

block is made only in one piece or not.

Another feature ofgthe invention resides It is obvious that changes may readily be in cutting away a corner of each block, so I made in the device of my invention, without that the blocks may be closely approached, t departing from the spirit thereof, and I do as indicated in Fig. 1, while at the same not, therefore, wish to be limited to the pretime bringing their jaws into such position cise construction shown, but, that adjacent plates, indicated at k, may be 1 Having thus described my invention, I placed close together. The cut away corner claim as new and desire to secure by Let portion has the shape desirably indicated in ters-Patent the following the lower right-hand corner of the left-hand l A printing plate holder including a hollow block in Fig. 1 and the upper left-hand corl block, a threaded operating shaft journaled ner in the right-hand block of Fig. 1. This l in the hollow of said block and rovided shaping of the corners of the two blocks perwith an annular groove in the 1ni st of its mits another relative arrangement of the threaded portion, said block being aperblocks indicated in Fig. 2. A block thus l tured through its bottom in line with the shaped may be described as having a rightsaid annular groove, a key inserted through angular recess in a vertical corner portion the aperture in the bottom of the block and. thereof. within the annular groove in the shaft, said.

It will be seen that I have provided a shaft having means for permitting the enprinting plate holder including a hollow I, gagement thereof with an operating tool apblock, a threaded operating shaft journaled j plied from above, whereby the shaft may be in the hollow of said block and provided rotated, the key, by engaging the shaft, prewith an annular groove in the midst of its venting the longitudinal movement of the threaded portion, said block being vertishaft, and a traveling jaw moving above the cally apertured through its bottom in the 1 block and in engagement with the threaded plane of said annular groove, a key inserted j portion of the shaft, whereby as the shaft is through the aJerture 1n the bottom of the l rotated in a fixed plane, the jaw is caused to block and wit am the annular groove in the advance or recede according to the direction shaft, said shaft having means for permitof rotation of the shaft, said jawhaving enting the engagement thereof with an operat- 1 gagement with a limited peripheral portion ing tool applied from above, whereby the l of the shaft so as to permit the jaw to travel shaft may be rotated, the key, by engaging 1 over the key.

the shaft, preventing the longitudinal movel In witness whereof, I hereunto subscribe ment of the shaft, and a traveling jaw movmy name this seventh day of July A. D.

ing above the block and in engagement with 1907. the threaded portion of the shaft whereby V r as the shaft is rotated in a fixed plane, th l HARRX' ROUSE' jaw is caused to advance or recede according j \Vitnesses:

to the direction of rotation of the shaft, said L. G. S'rRoH,

aw having engagement with a limited pej G. L. CRAG-G. 

